申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0209751A2
公开(公告)日:1987-01-28
New cephalosporin compounds represented by the following formula (I) and pharmaceutically acceptable salts thereof are provided, which have a broad bactericidal spectrum against various pathogenic bacteria including Pseudomonas aeruginosa and are useful as bactericidal remedies for pathogenic diseases of human and animals.
wherein A represent an alkanoyloxy group having 2-5 caroo atoms; a carbamoyloxy group; an azido group; or an unsut stituted or substituted pyridylthio group of a formula (1-1):
(where n is 0 or an integer of 3-5; R1 and R2 may be same or different and each represent a hydrogen atom, a halogen atom, a carboxyl gorup or an optionally halogen-substituted lower alkyl group having 1-5 carbon atoms; or an unsubstituted or substituted pyridiniumthio group of a formula (I-2):
(where n, R' and R2 have the same meaning as above; R3 represents linear or branched alkyl group having 1-5 carbon atoms; a halogen-substituted alkyl group, a cyclopropyl group, a cyclopropylmethyl group, an alkenyl group, an ox- ygen atom or a group of-(CH2)m-B;(m is an integer of 0-3; and B represents a hydroxyl group, an alkoxy group, an amino group, an alkyl-substituted amino group, a carboxyl group a carbamoyl group, a sulfonic acid group, a sulfonic acid amide group, a hydroxamic acid group, a cyano group, a thiol group, an alkylthio group, a methanesulfonylaminocarbonyl group or an acetamidosulfonyl group)]; or an unsubstituted or substituted pyridinium group of a formula (1-3):
(where n has the same meaning as above; R4 and R5 may be same or different and each represent a hydrogen atom, a linear or branched aklyl group having 1-5 carbon atoms, a carboxyl group, a carbamoyl group, a sulfonic acid group, a sulfonic acid amide group, a linear or branched alkylthio group having 1-5 carbon atoms, a halogen-substituted alkylthio group, a cycloalkanothio group, a cycloalkanomethylthio group, a carboxyalkylthio group, a carbamoylalkylthio group, an alkoxyalkylthio group or an alkyl-substituted aminoalkylthio group); or a 5- or 6- membered heterocyclicthio or bicycloheterocyclicthio group of a formula (1-4):
(where Het represents an optionally substituted thiazole, isothiazole, 1,2,3-thiadiazole, 1,3,4-thiadiazole, 1,3,4-triazole, 1,2,3,4-tetrazole, pyrimidine, 1,2,4-triazine, benzothiazole, benzimidazole, benzoxazole, 1,3,4-triazaindolidine or 2,3-dihydro-1H-idolidinium group).
本发明提供了由下式(I)代表的新型头孢菌素化合物及其药学上可接受的盐类,它们对包括铜绿假单胞菌在内的各种病原菌具有广泛的杀菌谱,可作为人类和动物病原性疾病的杀菌剂。
其中 A 代表具有 2-5 个碳原子的烷酰氧基;氨基甲酰氧基;叠氮基;或式(1-1)的未取代或取代的吡啶硫基:
(其中 n 为 0 或 3-5 的整数;R1 和 R2 可以相同或不同,各自代表氢原子、卤素原子、羧基或可选的卤素取代的具有 1-5 个碳原子的低级烷基;或式(I-2)的未取代或取代的吡啶硫基:
(其中 n、R' 和 R2 的含义同上;R3 代表具有 1-5 个碳原子的直链或支链烷基;卤素取代的烷基、环丙基、环丙基甲基、烯基、氧原子或(CH2)m-B 的基团;(m 为 0-3 的整数;B代表羟基、烷氧基、氨基、烷基取代的氨基、羧基、氨基甲酰基、磺酸基、磺酸酰胺基、羟肟酸基、氰基、硫醇基、烷硫基、甲磺酰氨基羰基或乙酰胺磺酰基)];或式(1-3)的未取代或取代的吡啶鎓基团:
(其中 n 的含义同上;R4和R5可以相同或不同,各自代表氢原子、具有1-5个碳原子的直链或支链烷基、羧基、氨基甲酰基、磺酸基、磺酸酰胺基、具有1-5个碳原子的直链或支链烷硫基、卤素取代的烷硫基、环烷硫基、环烷甲基硫基、羧基烷硫基、氨基甲酰基烷硫基、烷氧基烷硫基或烷基取代的氨基烷硫基);或式(1-4)的 5 或 6 成员杂环硫基或双环杂环硫基:
(其中 Het 代表任选取代的噻唑、异噻唑、1,2,3-噻二唑、1,3,4-噻二唑、1,3,4-三唑、1,2,3,4-四唑、嘧啶、1,2,4-三嗪、苯并噻唑、苯并咪唑、苯并恶唑、1,3,4-三氮吲哚啶或 2,3-二氢-1H-idolidinium 基团)。